The electronic jamming power assignment problem is studied for mixed formation of the electronic warfare aircraft and fighter aircraft in cooperative air combat.A computing model of electronic jamming neutralization distance is established based on the jamming power conditions.The combat superiority model for jamming neutralization distance is built.And the rewarding function for jamming distance is gained.An electronic jamming power assignment model is established based on the maximum of the rewarding function value.Finally,a model validation simulation is given,the result shows that the power assignment model is reasonable and can reach an optimal jamming effect.